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The first grounded bridge product released by Crown was the M600 amplifier (1974) primarily employed for commercial sound installations including constant voltage loudspeaker systems. [8] Crown received a patent for the invention in 1974. [9] After proving itself in the field, the topology was used to design the Microtech MT-1000 in 1984. [7]
In 1987, Crown introduced the Macrotech 2400, capable of driving 100-volt lines directly. [3] Since then, further developments in high-power amplifier technology have widened the choices. Many manufacturers make amplifiers capable of direct connection to a high-impedance constant-voltage speaker line.
A public address system (or PA system) is an electronic system comprising microphones, amplifiers, loudspeakers, and related equipment. It increases the apparent volume (loudness) of a human voice, musical instrument, or other acoustic sound source or recorded sound or music.
Crown is a census-designated place [3] in Farmington Township, Clarion County, in the U.S. state of Pennsylvania. The community is located along Pennsylvania Route 66 in northern Clarion County. As of the 2010 census the population was 183.
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The FM-5 tuner was offered as was the SCA-80 integrated amplifier in the early 1970s time line. Dynaco's solid-state kits were different from the popular Heathkit products (and Dynaco's own vacuum tube kits) because of their preassembled circuit boards. These boards were wired at the factory, tested and packaged with the unassembled chassis.
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